Williams has made two changes to the squad he named to face Glasgow Warriors away, last Friday night, where Ulster took a one point victory over the Scottish side. Ulster lock, Ed O'Donoghue, returns to the squad from injury, to bolster the Ulster line out, while Ulster development player Daniel Roache drops out of the senior squad.
ULSTER FORWARDS
Rory Best, Brendon Botha, Nigel Brady, Ryan Caldwell, Tom Court, Robbie Diack, Ed O'Donoghue, Carlo Del Fava, Stephen Ferris, Chris Henry, Matt McCullough, David Pollock, Bryan Young.
ULSTER BACKS
Darren Cave, Simon Danielli, Ian Humphreys, Paul Marshall, Timoci Nagusa, Niall O'Connor, Clinton Schifcofske, Andrew Trimble, Paddy Wallace, Ian Whitten, Isaac Boss.
Cardiff currently sit in 8th place in the Magners League, while Ulster hold 6th, although Cardiff have two games in hand, having played just 13 so far this season. Ulster will be aiming for an impressive home win, before heading away to face inter-pro rivals Connacht, and Welsh side Scarlets, in their remaining two matches of this year's Magners League.
Not only will Heineken Cup semi finalist be coming to Ravenhill on Friday; Ulster Rugby will also play host to the RBS 6Nations silverware which the Irish team won with Grand Slamming style this year.
Tickets for the Terrace Area of Ravenhill have already sold out, as has most of the Main Stand. Tickets are still available for all other areas of the ground, and will be available to purchase before the match on Friday.
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